FLOW LOGGER -
The main functions of flow meters on gravity systems can include:
Measurement of flows from areas or particular customers;
Tracking flow through the wastewater network using a nodal
Using flow for network control purposes.
These can be sited within the network and simply require a manhole to be placed in but will require power. Telemetry can be through a mobile phone signal.
The benefits of measuring flow on a gravity sewer system include:
Quantification of the pass forward flows at a particular point in the network allowing knowledge of whether there are any increases (infiltration) or decreases (blockages) within areas of the network.
Increased situational awareness of network performance in both dry and wet periods.
Flow monitoring in gravity sewers usually requires:
A minimum velocity of flow and a minimum depth of flow within the gravity sewer.
A manhole for the flow meter to be situated in which has access to both power and ideally telemetry although this can be managed using a GSM/GPRS signal which may require signal boosting in areas of weak coverage or where a heavy manhole lid is in place (i.e. in the road).